A bonus with activating #CTCSS *and* #tonesquelch (beware, its also possible to also set just CTCSS on TX and leave RX with no tone which may or may not be what you want) is the direct conversion RX on the #Baofeng with near 0 selectivity (these flaws are all "covered up" with DSP) no longer makes a racket when my car key fob is transmitting, as there is no CTCSS tone present to open squelch (maybe this is why #Retevis always activate it on their similarly priced radios?) #PMR446 #UHF #radio